Turns out the sketchbook is a common phenomenon at shows like the MoCCA Art Fest, so much so that there are genres, like the kiss book, where the drawings are lined up to look like they're smacking each other on the lips or the ass.

His sketchbook was a curiosity, because he not only made sketches in it, but jotted down his travelling expenses, what he thought about things that he saw, and all the gossip he heard in the towns through which he passed.